Imho those audio drop ins are hit and miss. I went through like 6pairs of the RED brand ones, they were all complete shit. And I mean I used them and instantly returned them cuz they sounded horrible and scratchy and all fucked up, in and out of stereo, etc. Then I got a pair of the SC's for giro helms and they have performed great. Recently I got another pair of the SC's and they are in another helmet, and I've noticed that they are performing more like the original REDs I had. Oh well I snagged them at a bin sale.
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